Question

What are the characteristic features of spongilla

Answer 1

Features of  spongilla

• They are generally marine aquatic organisms, with a few freshwater species.
• Their bodies are asymmetrical.
• Body shape can be cylindrical, vase-like, rounded or sac-like.
• They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer. There is a gelatinous, non-cellular mesoglea, in between these two layers. This contains many free amoeboid cells.
• The body has many pores called the ostia and a single large opening called osculum at the top.
• Spongocoel is the body cavity that is present.
• They have the characteristic canal system for the flow of water through the body.
• Sense organs are absent.

Answer 2

Explanation:

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